Cristian Javier had the lowest ERA in the 2022 postseason with an ERA of 0.40 or worse, with an ERA of 0.71.

Interpreted as:

lowest playoff era by a player 2022 minimum 0.4

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Cristian Javier C. Javier	0.71	2022	HOU	3	2	0	1.000	2	16	0	0	0	12.2	2	1	1	1	5	0	0	0	44	0	11.37	3.55	3.20	0.71	36.4	11.4	0.55	.045	0.71	1.42
2	Nick Martinez N. Martinez	0.82	2022	SDP	7	0	1	.000	0	11	0	0	0	11.0	3	1	1	1	1	1	1	0	37	0	9.00	0.82	11.00	0.82	29.7	2.7	0.36	.087	0.82	2.45
3	Jonathan Loáisiga J. Loáisiga	0.96	2022	NYY	6	0	1	.000	0	4	0	0	0	9.1	9	1	2	0	1	0	0	0	35	0	3.86	0.96	4.00	0.00	11.4	2.9	1.07	.300	1.93	8.68
4	David Robertson D. Robertson	1.17	2022	PHI	8	1	0	1.000	0	11	0	0	1	7.2	6	1	1	1	5	0	2	0	33	1	12.91	5.87	2.20	1.17	33.3	15.2	1.43	.313	1.17	7.04
5	Ranger Suárez R. Suárez	1.23	2022	PHI	5	2	0	1.000	3	13	0	0	1	14.2	9	2	3	1	6	1	1	0	61	0	7.98	3.68	2.17	0.61	21.3	9.8	1.02	.200	1.84	5.52
6	Andrew Bellatti A. Bellatti	1.29	2022	PHI	8	0	0		0	9	0	0	0	7.0	2	1	1	1	1	0	1	0	24	0	11.57	1.29	9.00	1.29	37.5	4.2	0.43	.077	1.29	2.57
7	Framber Valdez F. Valdez	1.44	2022	HOU	4	3	0	1.000	4	33	0	0	0	25.0	14	4	6	1	8	1	0	0	96	0	11.88	2.88	4.13	0.36	34.4	8.3	0.88	.245	2.16	5.04
8	Héctor Neris H. Neris	1.50	2022	HOU	8	2	0	1.000	0	9	0	0	0	6.0	2	1	1	1	0	0	0	0	20	0	13.50	0.00		1.50	45.0	0.0	0.33	.100	1.50	3.00
9	Trevor Stephan T. Stephan	1.59	2022	CLE	4	0	0		0	11	0	0	0	5.2	0	1	1	0	1	0	0	0	18	0	17.47	1.59	11.00	0.00	61.1	5.6	0.18	.000	1.59	0.00
10	Luis Garcia L. Garcia	1.59	2022	HOU	2	1	1	.500	0	6	0	0	0	5.2	4	1	1	1	0	0	1	0	21	1	9.53	0.00		1.59	28.6	0.0	0.71	.214	1.59	6.35
11	Seranthony Domínguez S. Domínguez	1.69	2022	PHI	9	2	0	1.000	0	18	0	0	1	10.2	7	2	2	0	1	0	2	0	40	4	15.19	0.84	18.00	0.00	45.0	2.5	0.75	.333	1.69	5.91
12	Luis Castillo L. Castillo	1.88	2022	SEA	2	1	1	.500	2	12	0	0	0	14.1	11	3	3	2	0	1	0	0	54	0	7.53	0.00		1.26	22.2	0.0	0.77	.231	1.88	6.91
13	Luis García L. García	1.93	2022	SDP	4	0	0		0	5	0	0	0	4.2	3	1	1	1	1	0	2	0	18	1	9.64	1.93	5.00	1.93	27.8	5.6	0.86	.182	1.93	5.79
14	Rafael Montero R. Montero	1.93	2022	HOU	10	1	0	1.000	0	10	0	0	0	9.1	5	2	2	1	6	0	1	0	39	0	9.64	5.79	1.67	0.96	25.6	15.4	1.18	.182	1.93	4.82
15	Shane Bieber S. Bieber	2.03	2022	CLE	2	1	0	1.000	2	15	0	0	0	13.1	8	3	3	2	4	0	0	0	51	1	10.13	2.70	3.75	1.35	29.4	7.8	0.90	.200	2.03	5.40
16	Connor Brogdon C. Brogdon	2.08	2022	PHI	7	0	0		0	13	0	0	0	8.2	6	2	2	0	2	0	1	0	33	0	13.50	2.08	6.50	0.00	39.4	6.1	0.92	.333	2.08	6.23
17	Shane McClanahan S. McClanahan	2.57	2022	TBR	1	0	1	.000	1	5	0	0	0	7.0	7	2	2	1	0	0	0	0	27	0	6.43	0.00		1.29	18.5	0.0	1.00	.286	2.57	9.00
18	Collin McHugh C. McHugh	2.70	2022	ATL	2	0	0		0	4	0	0	0	3.1	3	1	1	1	1	0	0	1	14	0	10.80	2.70	4.00	2.70	28.6	7.1	1.20	.250	2.70	8.10
19	Matt Festa M. Festa	2.70	2022	SEA	2	0	0		0	2	0	0	0	3.1	1	1	1	0	0	0	0	0	11	0	5.40	0.00		0.00	18.2	0.0	0.30	.111	2.70	2.70
20	Eli Morgan E. Morgan	2.70	2022	CLE	3	1	0	1.000	0	5	0	0	0	3.1	2	1	1	0	0	0	1	0	12	0	13.50	0.00		0.00	41.7	0.0	0.60	.286	2.70	5.40
21	Zack Wheeler Z. Wheeler	2.78	2022	PHI	6	1	3	.250	6	33	0	0	0	35.2	19	11	12	2	7	4	0	0	135	0	8.33	1.77	4.71	0.50	24.4	5.2	0.73	.191	3.03	4.79
22	Sam Hentges S. Hentges	2.84	2022	CLE	3	1	0	1.000	0	10	0	0	0	6.1	5	2	2	2	2	0	1	0	25	0	14.21	2.84	5.00	2.84	40.0	8.0	1.11	.273	2.84	7.11
23	Yu Darvish Y. Darvish	2.88	2022	SDP	4	2	1	.667	4	23	0	0	0	25.0	20	8	8	7	6	3	0	0	101	1	8.28	2.16	3.83	2.52	22.8	5.9	1.04	.210	2.88	7.20
24	Joe Musgrove J. Musgrove	2.89	2022	SDP	3	1	1	.500	3	18	0	0	0	18.2	15	6	6	1	6	0	0	0	74	0	8.68	2.89	3.00	0.48	24.3	8.1	1.13	.286	2.89	7.23
25	Gerrit Cole G. Cole	2.95	2022	NYY	3	2	1	.667	3	23	0	0	0	18.1	15	6	8	3	4	2	0	0	77	0	11.29	1.96	5.75	1.47	29.9	5.2	1.04	.267	3.93	7.36